Bloomberg has the BQuant product, which is tightly integrated Jupyter [1][2]. They also directly sponsor events in the Jupyter ecosystem and are institutional sponsors [3], which is something others might not be able to say.

[1]: https://www.bloomberg.com/professional/solution/bquant

[2]: https://www.bloomberg.com/company/stories/bquant-behind-the-...

[3]: https://jupyter.org/about